prefix (infl, en, prefix, cat=prefixes)
Etymology: From bis, twice
- (chemistry) An old, common method used to indicate the presence of an acidic hydrogen. In this method, sodium hydrogen sulfate is called sodium bisulfate and sodium hydrogen carbonate is called sodium bicarbonate. This method is not recommended by IUPAC and does not denote a "doubling up" of a specific group, which is reserved for the prefix "di" (e.x. carbon dioxide, CO2).
Derived Terms: (rel-top4, terms derived from bi-)
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Full Definition of bi-